<html>
  <head>
    <style>
      body {
        background: #88bb88;
      }
    </style>
  </head>
  <body>
    <span id="output"></span>
    <script>
      const testNoDeadlock = parent.document.getElementById('testNoDeadlock');
      testNoDeadlock.textContent = 99;
    </script>
  </body>
</html>
